Deep ordinal classification based on the proportional odds model

V. Vargas , P. Gutiérrez, C. Hervás-Martínez

8th International Work-Conference on the Interplay between Natural and Artificial Computation, pp. 441-451, 2019

Abstract

This paper proposes a deep neural network model for ordinal regression problems based on the use of a probabilistic ordinal link function in the output layer. This link function reproduces the Proportional Odds Model (POM), a statistical linear model which projects each pattern into a 1-dimensional space. In our case, the projection is estimated by a non-linear deep neural network. After that, patterns are classified using a set of ordered thresholds. In order to further improve the results, we combine this link function with a loss cost that takes the distance between classes into account, based on the weighted Kappa index. The experiments are based on two ordinal classification problems, and the statistical tests confirm that our ordinal network outperforms the nominal version and other proposals considered in the literature.

Cite this publication

BibTex

@inproceedings{vargas2019deep,
    author = {Víctor Manuel Vargas and Pedro Antonio Gutiérrez and César Hervás-Martínez},
    title = {Deep ordinal classification based on the proportional odds model},
    booktitle = {8th International Work-Conference on the Interplay between Natural and Artificial Computation},
    year = {2019},
    pages = {441--451},
    doi = {10.1007/978-3-030-19651-6_43}
}

APA

Vargas, V., Gutiérrez, P., Hervás-Martínez, C. (2019). Deep ordinal classification based on the proportional odds model. In 8th International Work-Conference on the Interplay between Natural and Artificial Computation (pp. 441-451).

V.M. Vargas (CA), P.A. Gutiérrez, C. Hervás-Martínez, (1/3) "Deep ordinal classification based on the proportional odds model". 8th International Work-Conference on the Interplay between Natural and Artificial Computation, pp. 441-451, 2019.

RIS

TY  - CONF
T1  - Deep ordinal classification based on the proportional odds model
T2  - 8th International Work-Conference on the Interplay between Natural and Artificial Computation
AU  - Vargas, Víctor Manuel
AU  - Gutiérrez, Pedro Antonio
AU  - Hervás-Martínez, César
JO  - 8th International Work-Conference on the Interplay between Natural and Artificial Computation
JA  - 8th International Work-Conference on the Interplay between Natural and Artificial Computation
Y1  - 2019
PY  - 2019
SP  - 441
EP  - 451
DO  - 10.1007/978-3-030-19651-6_43
ER  -